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CVE-2022-43501

Estado: ModificadaCrítica (9.1)—

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (4)

Elwsc — Kasago Ipv4Elwsc — Kasago Ipv4 LightElwsc — Kasago Ipv6/v4 DualElwsc — Kasago Mobile Ipv6

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-43501",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-43501",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-03-24T18:11:00.523781Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Secondary",
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        "cvssData": {
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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        "impactScore": 5.2,
        "exploitabilityScore": 3.9
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  },
  "affected": [
    {
      "source": "vultures@jpcert.or.jp",
      "affectedData": [
        {
          "vendor": "ZUKEN Elmic",
          "product": "Kasago IPv6/v4 Dual",
          "versions": [
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              "status": "affected",
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              "version": "prior to Ver6.0.1.34"
            }
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        {
          "vendor": "ZUKEN Elmic",
          "product": "Kasago mobile IPv6",
          "versions": [
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              "status": "affected",
              "version": "prior to Ver6.0.1.34"
            }
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  ],
  "published": "2023-02-10T04:15:11.107",
  "references": [
    {
      "url": "https://jvn.jp/en/vu/JVNVU99551468/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "vultures@jpcert.or.jp"
    },
    {
      "url": "https://www.elwsc.co.jp/news/6352",
      "tags": [
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    {
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
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      "description": [
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          "lang": "en",
          "value": "CWE-330"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-330"
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones."
    },
    {
      "lang": "es",
      "value": "La pila KASAGO TCP/IP proporcionada por Zuken Elmic genera ISN (número de secuencia inicial) para conexiones TCP desde una fuente insuficientemente aleatoria. Un atacante puede determinar el ISN de las conexiones TCP actuales o futuras y secuestrar las existentes o falsificar las futuras."
    }
  ],
  "lastModified": "2026-06-17T05:06:40.760",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:elwsc:kasago_ipv4:*:*:*:*:*:*:*:*",
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            },
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              "criteria": "cpe:2.3:a:elwsc:kasago_ipv6\\/v4_dual:*:*:*:*:*:*:*:*",
              "vulnerable": true,
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            },
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  "sourceIdentifier": "vultures@jpcert.or.jp"
}